Health check references `settings.redis_host`, which does not exist on Settings

[Aburke225]

api/routes/health.py reads settings.redis_host for its Redis probe, but the Settings model does not define that field, so the endpoint raises AttributeError before it can report Redis status.

Steps to reproduce: call GET /health and observe the AttributeError for redis_host; grep redis_host core/config.py confirms the field is absent from Settings.

[KadenTheHero]

Hello.

if you are okay with it i can work on this issue